Getting rid of a black background surrounding an Image

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Billy
Billy 2012-12-2
Hello, I was wondering how it would be possible to get rid of a black background that I have in an image. My teacher says to use a "green screen", but I do not see how it works for my image. bg is the fixed scene in which my image will be moving across. I understand that he made the black canvas by using the zeros function, but I cannot get it to work with my image. His image that he used also had a black background and his image resulted in only the colored image that he wanted. My image is this: http://www.buzzle.com/articles/how-to-make-a-paper-airplane.html
Here's the code that he used:
[row col pg] = size(bg);
pg = zeros(row,col,'uint8');
canv = cat(3,pg,pg,pg);
image(canv)

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回答（1 个）

Vieniava
Vieniava 2012-12-2
编辑：Vieniava 2012-12-2
[row col pg] = size(bg);
pg = zeros(row,col,'uint8');
gr = 255*ones(row,col,'uint8');
canv = cat(3,pg,gr,pg);
image(canv)
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Vieniava
Vieniava 2012-12-2
How does wind_turbines.jpg look like? How does airplanes.jpg look like?

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